Very probably not, as the Wavebird has a gamepad PCB with wireless functions added, and the drums have their own PCB with god knows what type of functions.
The only way I can see this happening is this, and keep in mind I am completely making shit up:
If the wireless functions on the Wavebird were on a daughter board that attached to a standardish Cube pad PCB ( and I'm pretty certain that it isn't ) then you could take that daughterboard and wire it to be fed by the drum PCB.
I think the more likely mod would be a box that you could plug any Gamecube periphial into which would transmit the signal to a Wavebird or like reciever. You'd still have the cord but the range would be extended to the strength of the signal. But then there's the issue of how to power the pads.
none of this makes any sense, please disregard